13231123231 has 2 divisors, whose sum is σ = 13231123232. Its totient is φ = 13231123230.

The previous prime is 13231123201. The next prime is 13231123253. The reversal of 13231123231 is 13232113231.

It is an a-pointer prime, because the next prime (13231123253) can be obtained adding 13231123231 to its sum of digits (22).

It is a strong prime.

It is an emirp because it is prime and its reverse (13232113231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13231123231 - 2¹⁹ = 13230598943 is a prime.

It is a super-2 number, since 2×13231123231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231123201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615561615 + 6615561616.

It is an arithmetic number, because the mean of its divisors is an integer number (6615561616).

Almost surely, 2^13231123231 is an apocalyptic number.

13231123231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231123231 is an equidigital number, since it uses as much as digits as its factorization.

13231123231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

Adding to 13231123231 its reverse (13232113231), we get a palindrome (26463236462).

The spelling of 13231123231 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty-three thousand, two hundred thirty-one".